Table 3.
Inter-observer differences of LVEF and GLS assessed with Vivid 7 and Vivid E95.
| Vivid 7 | Vivid E95 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LVEF | LVEF | |||||||||||
| r | Bias | P value | LOA | % variability | ICC | r | Bias | P value | LOA | % variability | ICC | |
| Expert vs Fellow A | 0.89 | −0.3 | .1867 | ±7.4 | 6.5% | 0.888 | 0.89 | 0.2 | .3118 | ±6.9 | 5.3% | 0.893 |
| Expert vs Fellow B | 0.87 | −1.5 | <.0001 | ±8.0 | 7.4% | 0.859 | 0.87 | −1.1 | <.0001 | ±7.4 | 6.5% | 0.859 |
| Fellow A vs Fellow B | 0.88 | −1.2 | <.0001 | ±7.8 | 7.1% | 0.871 | 0.86 | −1.3 | <.0001 | ±8.0 | 6.3% | 0.848 |
| GLS | GLS | |||||||||||
| r | Bias | P value | LOA | % variability | ICC | r | Bias | P value | LOA | % variability | ICC | |
| Expert vs Fellow A | 0.93 | −0.8 | <.0001 | ±2.5 | 8.1% | 0.900 | 0.95 | −0.3 | <.0001 | ±2.0 | 5.5% | 0.945 |
| Expert vs Fellow B | 0.91 | −0.9 | <.0001 | ±2.9 | 8.8% | 0.882 | 0.93 | −0.5 | <.0001 | ±2.5 | 6.7% | 0.916 |
| Fellow A vs Fellow B | 0.92 | −0.1 | .5426 | ±2.6 | 7.2% | 0.900 | 0.94 | −0.1 | .0234 | ±2.2 | 5.9% | 0.936 |
GLS, global longitudinal strain; ICC, intra-class correlation coefficient; LOA, limits of agreement; LVEF, left ventricular ejection fraction.
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